P2312 Code - Ignition Coil 'E' Primary Control Circuit Low
Quick Answer
The current flow, or dwell, through the primary ignition coil is controlled by the Powertrain Control Module (PCM) by providing a switched ground path through the ignition coil driver to ground. Common causes include Faulty Ignition Coil 'E', Ignition Coil 'E' harness is open or shorted, Ignition Coil 'E' circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P2312 indicates Ignition Coil 'E' Primary Control Circuit Low.
- Common causes
- Common causes include Faulty Ignition Coil 'E', Ignition Coil 'E' harness is open or shorted, Ignition Coil 'E' circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P2312 Description
What are the Possible Causes of the DTC P2312?
- Faulty Ignition Coil 'E'
- Ignition Coil 'E' harness is open or shorted
- Ignition Coil 'E' circuit poor electrical connection
How to Fix the DTC P2312?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P2312 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Information for Specific Makes
- P2312 Audi — Ignition Coil 5 Primary Control Circuit Low
- P2312 Buick — Ignition Coil 5 Control Circuit Low Voltage
- P2312 Cadillac — Ignition Coil 5 Control Circuit Low Voltage
- P2312 Chevrolet — Ignition Coil 5 Control Circuit Low Voltage
- P2312 Chrysler — Ignition Coil 'E' Primary Control Circuit Low
- P2312 Dodge — Ignition Coil 'E' Primary Control Circuit Low
- P2312 Ford — Ignition Coil 'E' Primary Control Circuit Low
- P2312 GMC — Ignition Coil 5 Control Circuit Low Voltage
- P2312 Jeep — Ignition Coil 'E' Primary Control Circuit Low
- P2312 Lincoln — Ignition Coil 'E' Primary Control Circuit Low
- P2312 Mercury — Ignition Coil 'E' Primary Control Circuit Low
- P2312 Suzuki — Ignition Coil 5 Primary Control Circuit Low
- P2312 Volkswagen — Ignition Coil 5 Primary Control Circuit Low
Frequently Asked Questions about P2312 Code
1. What are common symptoms of OBDII code P2312 (Ignition Coil 'E' Primary Control Circuit Low)?
- Common symptoms include rough idling, engine misfires, loss of power, and illuminated Check Engine Light.
2. What can cause OBDII code P2312 to trigger?
- This code is typically triggered by a faulty ignition coil, wiring issues in the ignition coil circuit, or a problem with the Engine Control Module (ECM).
3. How can I diagnose the cause of OBDII code P2312?
- Diagnose the code by inspecting the ignition coil 'E', checking the wiring for any damage, testing the resistance of the coil, and scanning the ECM for related error codes.
4. Can a bad spark plug cause OBDII code P2312?
- Yes, a bad spark plug can lead to ignition coil issues and potentially trigger code P2312. It is recommended to inspect and replace spark plugs if needed.
5. What is the typical repair for OBDII code P2312?
- The typical repair involves replacing the faulty ignition coil 'E', repairing any damaged wiring, and clearing the error code with a diagnostic tool.
6. Are there any DIY tips for fixing OBDII code P2312?
- DIY enthusiasts can attempt to replace the ignition coil 'E' themselves by following proper procedures and using the right tools. However, if unsure, it's best to seek professional help.
7. Can driving with OBDII code P2312 cause further damage to the vehicle?
- Continuing to drive with this code can potentially lead to more severe engine problems such as catalytic converter damage, decreased fuel efficiency, and further engine misfires.
8. Is it safe to clear the OBDII code P2312 without fixing the underlying issue?
- Clearing the code without fixing the issue is not recommended as the problem will persist, potentially causing more significant damage over time.
9. How much does it typically cost to repair OBDII code P2312 at a mechanic or dealership?
- The cost of repairing this code can vary depending on the labor rates and parts costs, but it typically ranges from $100 to $300 for parts and labor.
10. Can regular maintenance prevent OBDII code P2312 from occurring?
- Regular maintenance, such as timely spark plug replacements and periodic inspections of the ignition system, can help prevent issues that may trigger code P2312.
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